Home / 21,004.72-31,497.88-11,141.76

Finding the Fourth Proportional to 21,004.72, 31,497.88 and 11,141.76

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Solution

The fourth proportional to 21,004.72, 31,497.88 and 11,141.76 is: 16,707.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.72 : 31,497.88 = 11,141.76 : x
  2. Step 2: Convert to fraction form
    21,004.72/31,497.88 = 11,141.76/x
  3. Step 3: Cross multiply
    21,004.72x = 31,497.88 × 11,141.76
  4. Step 4: Simplify right side
    21,004.72x = 350,941,819.47
  5. Step 5: Solve for x
    x = 350,941,819.47/21,004.72
  6. Step 6: Final answer
    x = 16,707.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.